Number of shorts sold=xnumber of Jeans sold =y 100 items were sold x +y=100 eq 1x=100-y The shorts sold for $15 each, and the jeans sold for $28 per pair.Sales of denim shorts and denim jeans for May totaled $1,955. 15x+28y=1955 eq 2
substitute the value of x in second equation 15(100-y) +28y=1955 1500-15y+28y=1955 13y=455 y=35 x=100-35=65 Number of shorts sold=x=65
number of Jeans sold =y=35
